<template>
    <div class="header">
        <!-- 折叠按钮 -->
        <div class="collapse-btn" @click="collapseChage">
            <i class="el-icon-menu"></i>
        </div>
        <div class="logo">{{this.name}}</div>
        <div class="header-right">
            <div class="header-user-con">
                <!-- 全屏显示 -->
                <div class="btn-fullscreen" @click="handleFullScreen">
                    <el-tooltip effect="dark" :content="fullscreen?`取消全屏`:`全屏`" placement="bottom">
                        <i class="el-icon-rank"></i>
                    </el-tooltip>
                </div>
                <!-- 消息中心 -->
                <div class="btn-bell">
                    <el-tooltip effect="dark" :content="message?`有${message}条未读消息`:`消息中心`" placement="bottom">
                        <router-link to="/notice">
                            <i class="el-icon-bell"></i>
                        </router-link>
                    </el-tooltip>
                    <span class="btn-bell-badge" v-if="message"></span>
                </div>
                <!-- 用户头像 -->
                <div class="user-avatar"><img v-bind:src="this.user.avatar"></div>
                <!-- 用户名下拉菜单 -->
                <el-dropdown class="user-name" trigger="click" @command="handleCommand">
                    <span class="el-dropdown-link">
                        {{this.user.name}} <i class="el-icon-caret-bottom"></i>
                    </span>
                    <el-dropdown-menu slot="dropdown">
                        <el-dropdown-item divided command="updatePwd">修改密码</el-dropdown-item>
                        <el-dropdown-item divided command="loginout">退出登录</el-dropdown-item>
                    </el-dropdown-menu>
                </el-dropdown>
            </div>
        </div>
        <el-dialog :title="form.type" :visible.sync="form.show" width="20%">
            <el-form ref="form" :model="form.model" label-width="100px">
                <el-form-item label="原密码">
                    <el-input type="password" v-model="form.model.oldPwd"></el-input>
                </el-form-item>
                <el-form-item label="新密码">
                    <el-input type="password" v-model="form.model.pwd"></el-input>
                </el-form-item>
                <el-form-item label="确认密码">
                    <el-input type="password" v-model="form.model.confirmPwd"></el-input>
                </el-form-item>
            </el-form>
            <span slot="footer" class="dialog-footer">
                <el-button @click="form.show = false">取 消</el-button>
                <el-button type="primary" @click="handleUpdatePwd">确 定</el-button>
            </span>
        </el-dialog>
    </div>
</template>
<script>
    import bus from '../common/bus';
    import config from '@/config'
    import store from "./../../store";
    import md5 from 'js-md5'
    import { removeToken } from '@/utils/auth' // 保存Token
    import { updatePwd } from '@/api/system/user'
    export default {
        data() {
            return {
                collapse: true,
                fullscreen: false,
                name: '书香云集',
                message: 2,
                form:{
                    type:'修改密码',
                    model:{
                        oldPwd:'',
                        pwd:'',
                        confirmPwd:''
                    },
                    show:false
                },
                user:{
                    name:store.getters.name,
                    avatar:store.getters.avatar ? store.getters.avatar : "static/img/img.jpg"
                }
            }
        },
        methods:{
            // 用户名下拉菜单选择事件
            handleCommand(command) {
                if(command == 'loginout'){
                    removeToken();
                    store.dispatch("LogOut").then(res => {
                        this.$router.push('/login');
                    })
                }
                if(command == 'updatePwd'){
                    this.form.model = {
                        oldPwd:'',
                        pwd:'',
                        confirmPwd:''
                    }
                    this.form.show = true;
                }
            },
            // 侧边栏折叠
            collapseChage(){
                this.collapse = !this.collapse;
                bus.$emit('collapse', this.collapse);
            },
            // 全屏事件
            handleFullScreen(){
                let element = document.documentElement;
                if (this.fullscreen) {
                    if (document.exitFullscreen) {
                        document.exitFullscreen();
                    } else if (document.webkitCancelFullScreen) {
                        document.webkitCancelFullScreen();
                    } else if (document.mozCancelFullScreen) {
                        document.mozCancelFullScreen();
                    } else if (document.msExitFullscreen) {
                        document.msExitFullscreen();
                    }
                } else {
                    if (element.requestFullscreen) {
                        element.requestFullscreen();
                    } else if (element.webkitRequestFullScreen) {
                        element.webkitRequestFullScreen();
                    } else if (element.mozRequestFullScreen) {
                        element.mozRequestFullScreen();
                    } else if (element.msRequestFullscreen) {
                        // IE11
                        element.msRequestFullscreen();
                    }
                }
                this.fullscreen = !this.fullscreen;
            },
            handleUpdatePwd(){
                if(this.form.model.oldPwd === ''){
                    this.$message({
                        message: "请输入旧密码",
                        type: "warning"
                    });
                    return
                }
                if(this.form.model.pwd === ''){
                    this.$message({
                        message: "请输入新密码",
                        type: "warning"
                    });
                    return
                }
                if(this.form.model.pwd != this.form.model.confirmPwd){
                    this.$message({
                        message: "两次输入密码不一",
                        type: "warning"
                    });
                    return
                }
                if(this.form.model.pwd === this.form.model.oldPwd){
                    this.$message({
                        message: "新密码不能和旧密码相同",
                        type: "warning"
                    });
                    return
                }
                this.form.model.oldPwd = md5(this.form.model.oldPwd)
                this.form.model.pwd = md5(this.form.model.pwd)
                updatePwd(this.form.model).then(res => {
                    if (res.status === 200) {
                        this.form.show = false;
                        this.$message({
                            message: "操作成功",
                            type: "success"
                        });
                    }
                });
            }
        },
        mounted(){
            if(document.body.clientWidth < 1500){
                this.collapseChage();
            }
        }
    }
</script>
<style scoped>
.header {
  position: relative;
  box-sizing: border-box;
  width: 100%;
  height: 70px;
  font-size: 22px;
  color: #fff;
}
.collapse-btn {
  float: left;
  padding: 0 21px;
  cursor: pointer;
  line-height: 70px;
}
.header .logo {
  float: left;
  width: 250px;
  line-height: 70px;
}
.header-right {
  float: right;
  padding-right: 50px;
}
.header-user-con {
  display: flex;
  height: 70px;
  align-items: center;
}
.btn-fullscreen {
  transform: rotate(45deg);
  margin-right: 5px;
  font-size: 24px;
}
.btn-bell,
.btn-fullscreen {
  position: relative;
  width: 30px;
  height: 30px;
  text-align: center;
  border-radius: 15px;
  cursor: pointer;
}
.btn-bell-badge {
  position: absolute;
  right: 0;
  top: -2px;
  width: 8px;
  height: 8px;
  border-radius: 4px;
  background: #f56c6c;
  color: #fff;
}
.btn-bell .el-icon-bell {
  color: #fff;
}
.user-name {
  margin-left: 10px;
}
.user-avatar {
  margin-left: 20px;
}
.user-avatar img {
  display: block;
  width: 40px;
  height: 40px;
  border-radius: 50%;
}
.el-dropdown-link {
  color: #fff;
  cursor: pointer;
}
.el-dropdown-menu__item {
  text-align: center;
}
</style>
